Dame Diane Elizabeth Robertson DNZM (born 11 May 1953) is a New Zealand community leader. She was the Auckland City Missioner from 1998 until 2015.Robertson was born in Waipukurau in 1953, the daughter of Joan Lois Coburn and her husband Alexander Lawrence Coburn. She was educated at Tararua College, and then studied at Palmerston North Teachers' College where she gained a Diploma of Teaching. She met her husband, Wilfred Holt, when she was teaching at Waiouru Military Camp and he was serving in the army, and they married in 1975. They would go on to have three children. Wikipedia